Journals

The effect of formaldehyde treatment on the solubility of fish meal in M.NaC1 solution was investigated. Subsequently the variation in solubility of fish meals obtained from various sources was examined. A series of metabolic trials was then conducted with Merino…

In experiments with adult Merino wethers, where wheaten straw was supplemented with an urea-containing mixture, the following was found: (a) Poor quality roughage may maintain the body weight of Merino sheep provided that the organic matter digestibility is not lower…

Results are reported on the incidence of foetal dwarfism in purebred Shorthorn cattle in the subtropics. One third of the calves born weighed less than 18 kg and half weighed less than 22,75 kg. The weight of dwarfs ranged from…

Thirty-six animals were used to examine the effect of castration and vasectomy on performance of bulls which grazed veld under two systems of management. During the trial (which lasted from 15th May, 1964 to 28th December, 1966) rates of bodymass…

The carcasses of eighteen steers with an average age of 16 months (beef, dairy and crossbred types) were used to determine the part-whole relationships in the composition of cuts and carcasses. The prime rib cut which is a very practical…

Seasonal changes in chemical composition of adult blesbok (Damaliscus dorcas phillips/) males from the Van Riebeeck nature reserve Whole body analyses were carried out on mature blesbok males over the four seasons of the year. A clear seasonal pattern emerged…

A description of procedures and associated errors for chemical analyses of whole bodies of sheep. As part of a comparative slaughter experiment, whole bodies of 24 lambs were analyzed for dry matter, nitrogen, ether-extract, ash and energy content. A large…

In an experiment designed to test the effect of different protein and energy treatments on body mass restriction of broiler breeder pullets, carcass analyses were carried out on these birds at 3 different stages during the growing period. None of…

Oestrus was synchronized outside the normal breeding season in two groups of 25 and 30 dry Africander cows respectively by administration of progesterone in oil + PMS (group I) and progesterone in oil + prostaglandin + PMS (group II). 76,0%…

Total net energy retention was determined on 27 Dormer X Merino weather lambs by means of the tritiated water space method whilst the digestibility of the nine experimental rations was determined simultaneously. Net energy requirements for maintenance (NEm) and production…

Effect of adding urea, limestone or biuret to maize silage cut at two stages of maturity: Dry matter digestibility of maize silage ensiled three weeks later than the hard dough stage (42,6 % dry matter) was higher than that of…

Digestibility and voluntary intake trials were undertaken with S.A. Mutton Merino wethers fed a basal diet of milled lucerne and oat hay (control diet) to which various proportions of milled Prosopis juliflora pods were added up to 100% replacement. Ad…

An experiment is described in which three diets differing in protein and energy content but having a constant energy:protein ratio, were each fed to three groups of broiler chickens to four weeks of age. The three groups on each diet…